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ive heard "dont touch the capacitor, IT COULD KILL YOU!"
finally dug into two of them and so i have a general idea whats going on in there.
but i dont even know what a capcitor is! what are some safeguards for not getting shocked taking apart a tv, like where is it on the motherboard, where not to touch on the tv, etc
also the little clips are stainless steel!
I think it has something to do with a zipper and a tailgate, but I can't remember exactly how it works, or where I saw that at
If I remember correctly Hoss is the one who can explain it to you.
If has been plugged in recently you are going to get shocked when your taking it apart as the capacitors will still have a charge built up in them. If its been sitting around for a year your good to go. I guess you could discharge the big capacitors before you start working on it also. Ive been shocked a few times but never that bad its all felt like 110 volts or less to me.
Why does anyone ever have to be shocked by a TV/monitor?? It's really easy to discharge them, you can even make up a discharge strap out of some scrap wire and a smaller clamp.
Just be forewarned that there is possibly enough voltage there to stop a heart.
http://www.scrapmetalforum.com/day-l...-possible.html
http://www.scrapmetalforum.com/off-t...hows-work.html
I hate all of you lol.
haha! Hoss, I guess this place is the only one worse than my Mom, about Not forgetting (particular) stuff ; )Quote:
Originally Posted by TheHoss
The crt(tube) holds most of the potentia charge. Its the most dangerous part. Follow the guide that Mech provided above. The charge is no joke. Mike.
http://download.installmob.com/anima...=HRWTM&lang=enQuote:
Originally Posted by TheHoss
That's the first part I go for. Using a test light, less the light, wired directly through from the probe to the clamp, and clamped securely onto the chassis ground ( that's the metal part around the tube, where all the ground wires are secured), I push the metal tip up into the suction cup on the picture tube, until it contacts the metal inside (usually just going ahead and using the tip to break the metal inside completely away). After that I drag the tip around on the boards, wires, and anything else that looks like electrical components to be sure there's no static leftQuote:
Originally Posted by miked
Maybe I've been lucky so far, but I don't discharge any of the TV's/monitors. Maybe it helps that I use insulated tools, who knows.
Or could be that the "bleed-off resistors" are working like they should be, after a few days unplugged they should be OK. But you just never know when someone will plug one in one last time just to see if it's still working right before they give it away. A real crapshoot, isn't it??Quote:
Originally Posted by IdahoScrapper
He he he. Your own fault. You told the story.Quote:
Originally Posted by TheHoss
I always ground every tube I do just to be safe. I use 2 grounding wires with alligator clips with a screw driver. Just in case one wire doesn't have good ground. Older tubes didn't have the bleed off circuit. After you ground it out leave rubber cup on tube, cut wire off with well insulated cutter. My screw driver is wrapped with electrical tape almost down to the end. The tube itself holds the voltage. Its your life and I don't trust technology.
most tv's have a discharging thing under the cap so it does it anyway.
I have my own quarantine section just incase and any fresh tv, monitor or microwave I get goes at the back of the queue.
a week or so and it would be impossible to have power still there.
but thinking about the 300 odd i've done so far, I can't remember ever actually touching the cap, I cut the wire and that's it,
why does the cap need removing anyway?
very good advice for future newbies who stumble on this thread. eliminates what I call the Tesla dance, which is when you dance around flailing your hands in the air after boneheadedly resting your hand on the tube when you're in the process of discharging it. Dance and flail, then you touch it again, dance and flail, touch a different part dance and flail, try it again holding the wrong part of the screwdriver, dance some more. Then you pretty much know you'd better pay attention, or set up Ben's queue. (I went with the queue)Quote:
Originally Posted by scrapperben
Those anti-static bracelets for working with computers and other sensitive electronic components are awesome. And dirt cheap... heck, it would probably be easy to make one yourself with scrap you have lying around.
Just make sure the grounding wire that connects you to whatever piece of metal you're using (usually the steel frame of whatever you're working on) is nice and long, but not so long that it will catch on stuff. And make sure that you strap it so that the bare metal on the bracelet itself is making contact with your skin, or it defeats the purpose.
They're kind of a PITA, and to be honest I hardly ever use them, but for CRTs that I'm unsure about I will always wear one. Better safe than sorry... it's true that it's very rare to get zapped, but it only takes once. Same with repairing PCs and whatnot... dangers of static discharge causing damage really is over exaggerated, but it CAN happen, and it sucks when it does. It actually happened to me once, years ago... spilled coffee in my tower, turned it off immediately and tried to dry it off and all that. Couple hours later I'm poking around in it trying to find moisture, and accidentally brushed a finger across the north bridge heatsink... ZAP! The tiniest little spark, but that's more than enough to permanently fry it... if you can actually SEE the spark, it's something like 1000x the voltage needed to actually kill chips.
So yeah... to back everyone else up : Better safe than sorry!
excellent name for it. Ive done it before after messing with a playstation console when i was 12. Probably should have unplugged it before taking it apartQuote:
Originally Posted by volvoscrapper
except, i called it the Nikola Natbush
Remember, you can get shocked even after everything is off just from the glass thats left. I once had everything off/out of a monitor and as I was reaching over it to pick up the cover to put back on - zap!
And you can possibly get it from the can caps on the circuitboard. Just a quick brush over with a grounded screwdriver on the contacts should get rid of any shocking experience.Quote:
Originally Posted by newattitude
grounded screwdriver? what is that?
also how do you get shocked from a microwave?
Do you ever read any of the links we post for you when you ask a question? We can't keep spoon feeding you.Quote:
Originally Posted by bluemeate
A grounded screwdriver is just that, you take a screwdriver and add a ground wire of some sort (copper) to it and brush it across the terminals of the caps. Pull a wire off of a junk small battery charger and there is your ground wire for the screwdriver, just fasten the wire to the driver with a small hose clamp. As your bleeding off the parts just make sure to keep your hand on the insulated part of the screwdriver.
As far as the 2nd question, there is a big can cap. inside every microwave, but if you look they do have a bleed-off resistor fastened to one terminal. Just give them a few days,,,
How to Discharge a CRT Monitor: 11 steps - wikiHow
I never got shocked but after hearing about people getting shocked it scared some sense into me that my luck may run out at some point, so I made me a shorting probe, posted a pic of it in another thread but in case you haven't read or seen it:
http://imageshack.us/a/img42/1460/dsc0468oc.jpg
So far nothing I've torn down since making it has still had a charge (no pop sound touching the anodes), but if it did I know I'd be safe instead of sorry...